OK my Dsmlink experience is a little faded but couple things first; Is your cel hooked up to your pulled timing warning? I normally had it hooked up to come on when I was pulling more than 5 degrees. That may be happening with your cel. Also take a visual (or more like a feel) of your existing knock sensor. See if your "goo" in the sensor is running (or even in the sensor). Sure sign of bad sensor. Just a starting point.